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助催化剂五氧化二磷对环氧氯丙烷(ECH)-环氧乙烷(EO)-烯丙基缩水甘油醚(AGE)三元共聚合的影响

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Indexed by:期刊论文

Date of Publication:2015-03-15

Journal:合成橡胶工业

Included Journals:PKU、ISTIC

Volume:38

Issue:2

Page Number:155

ISSN No.:1000-1255

Key Words:五氧化二磷;环氧氯丙烷-环氧乙烷-烯丙基缩水甘油醚三元共聚物;催化活性;热性能

Abstract:采用三异丁基铝-正磷酸-1,8-二氮杂二环[5.4.0]十一碳-7-烯主催化剂、P2O5助催化剂进行ECH-EO-AGE三元共聚合反应,通过黏度法、傅里叶变换红外光谱、核磁共振碳谱及差示扫描量热法对共聚物进行了表征.结果表明,添加P205助催化剂,在实验范围内可使转化率从52.4%提高到96.4%,共聚物特性黏数从1.16 dL/g增加到1.56 dL/g,表明催化剂的催化活性显著提高.同时,当P205质量分数从0增加到27%时,三元共聚物组成发生较大变化,ECH和AGE组分含量不断增大,而EO含量却显著下降,表明控制P2O5用量即可有效调控三元组成含量;P2O5的加入能使共聚物的玻璃化转变温度有所提高.

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